Sequentially injected separate fluids (e.g., slugs)

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166400000

Sequentially injected separate fluids (e.g., slugs)

57

20100116511

SYSTEMS AND METHODS FOR DOWNHOLE SEQUESTRATION OF CARBON DIOXIDE - Carbon dioxide is sequestered in a formation using dual or multiple completion and injection methods that reduce or eliminates upward leak rates of the sequestered carbon dioxide. The dual or multiple completion and injection method involves the injection of a benign fluid such as brine (water) into a permeable layer of the formation located above the sequestration layer and which is separated form the sequestration layer by a nearly impermeable layer. The water is injected at the same time the carbon dioxide is injected.

05-13-2010

20090288843

Enzyme enhanced oil recovery (EEOR) for waterflooding operations - The present disclosure involves the release or recovery of subterranean hydrocarbon deposits and, more specifically, to a system and method for secondary and/or enhanced oil recovery (EOR), by utilizing waterflooding compositions that include enzymes as well as methods for injecting waterflooding compositions into subterranean formations for oil recovery operations.

Slurrified Heavy Oil Recovery Process - A method for recovering heavy oil is provided. In at least one specific embodiment, the method includes accessing, from two or more locations, a subsurface formation having an overburden stress disposed thereon, the formation comprising heavy oil and one or more solids. The formation is pressurized to a pressure sufficient to relieve the overburden stress. A differential pressure is created between the two or more locations to provide one or more high pressure locations and one or more low pressure locations. The differential pressure is varied within the formation between the one or more high pressure locations and the one or more low pressure locations to mobilize at least a portion of the solids and a portion of the heavy oil in the formation. The mobilized solids and heavy oil then flow toward the one or more low pressure locations to provide a slurry comprising heavy oil and one or more solids. The slurry comprising the heavy oil and solids is flowed to the surface where the heavy oil is recovered from the one or more solids. The one or more solids are recycled to the formation.

09-24-2009

20120138316

ENHANCED OIL RECOVERY SYSTEMS AND METHODS - There is disclosed a system for producing oil and/or gas comprising a mechanism for recovering oil and/or gas from an under-ground formation, the oil and/or gas comprising natural gas; a mechanism for converting at least a portion of the natural gas from the recovered oil and/or gas into an enhanced oil recovery solvent formulation; and a mechanism for releasing at least a portion of the enhanced oil recovery solvent formulation into the formation.

06-07-2012

20120125643

PROCESS FOR MINERAL OIL PRODUCTION USING HYDROPHOBICALLY ASSOCIATING COPOLYMERS - A process for mineral oil production, in which an aqueous formulation comprising at least one water-soluble, hydrophobically associating copolymer is injected through at least one injection borehole into a mineral oil deposit, and crude oil is withdrawn from the deposit through at least one production borehole, wherein the water-soluble, hydrophobically associating copolymer comprises at least acrylamide or derivatives thereof, a monomer having anionic groups and a monomer which can bring about the association of the copolymer, and water-soluble, hydro-phobically associating copolymer which has a low shear degradation and is suitable for execution of the process.

05-24-2012

20120073836

METHODS FOR INCREASING OIL PRODUCTION - A method of recovering petroleum from dormant oil wells or increasing the production of oil wells. An alkali or alkali earth carbonate is introduced into a water layer associated with a subterranean petroleum reservoir and/or an explosive composition is introduced into an oil layer associated with a subterranean petroleum reservoir. CO

03-29-2012

20080236845

Method for Increasing the Production of Hydrocaarbon Liquids and Gases - A method for reducing or climinating water block around a well bore of a well bore region in a reservoir is provided. The method comprises removing the water from around the well bore, injecting crude oil around the well bore, and injecting precipitants causing surface precipitation of asphaltenes thereby altering formation wettability in the well bore and decreasing capillary forces of retention for water and/or gas condensates and increasing the flow of hydrocarbon fluids from the reservoir.

10-02-2008

20100126737

METHODS FOR INCREASING OIL PRODUCTION - A method of recovering petroleum from dormant oil wells or increasing the production of oil wells is disclosed. An alkali or alkali earth carbonate is introduced into a water layer associated with a subterranean petroleum reservoir and/or an explosive composition is introduced into an oil layer associated with a subterranean petroleum reservoir. CO

05-27-2010

20120085555

Hydrocarbon recovery process - Hydrocarbons are recovered from subterranean formations by waterflooding. The method comprises passing an aqueous displacement fluid via an injection well through a porous and permeable sandstone formation to release oil and recovering said released oil from a production well spaced from said injection well, wherein (a) the sandstone formation comprises at least one mineral having a negative zeta potential under the formation conditions; (b) oil and connate water are present in the pores of the formation; and (c) the fraction of the divalent cation content of the said aqueous displacement fluid to the divalent cation content of said connate water is less than 1.

04-12-2012

20110303423

VISCOUS OIL RECOVERY USING ELECTRIC HEATING AND SOLVENT INJECTION - To recover in situ viscous oil from an underground reservoir, electricity is conducted through the underground reservoir by at least two electrodes in an amount that would, in the absence of solvent injection, cause water in the reservoir to vaporize adjacent to the electrodes, and injecting solvent into the reservoir to mitigate water vaporization adjacent to the electrodes by vaporizing solvent in this region. Oil and solvent are produced through one or more production wells.

12-15-2011

20120152570

System and Method For Enhancing Oil Recovery From A Subterranean Reservoir - A system and method is disclosed for enhancing the distribution of an enhanced oil recovery fluid utilizing electrokinetic-induced migration for enhancing oil recovery from a subterranean reservoir. An enhanced oil recovery fluid is injected into the hydrocarbon bearing zone through the injection well. An electric field is generated through at least a portion of the hydrocarbon bearing zone to induce electrokinetic migration of the enhanced oil recovery fluid. Electrokinetic induced migration allows for the enhanced oil recovery fluid to contact portions of the reservoir that previously were unswept, which as a result enhances recovery of hydrocarbons through the production well.

06-21-2012

20100096146

METHOD FOR PRODUCING CRUDE OIL - The invention describes a method for injecting a fluid into a crude oil-containing layer of rock or earth by means of a suitable line, wherein the line is introduced into the layer of rock or earth and the fluid is injected for the purpose of an enhanced crude oil production from the crude oil-containing layer of rock or earth.

04-22-2010

20130062078

PROCESS FOR PRODUCING MINERAL OIL FROM UNDERGROUND MINERAL OIL DEPOSITS - A process for producing mineral oil from underground mineral oil deposits. One or more flooding media is injected into an injection well and mineral oil is withdrawn from a production well. Highly permeable zones are blocked in the region between the injection well and the production well by injecting aqueous formulation F1 and aqueous formulation F2 each separately in succession through the injection well into the deposit. F1 and F2 mix with one another in the formation after injection to form viscous gels. F1 comprises water and urotropin and F2 comprises water and urea. F1 and/or F2 comprise(s) at least one further compound M selected from metal compounds and semimetal compounds, which further compound can form gels when admixed with bases, the injection well temperature before process step (2) being not more than 60° C.

03-14-2013

20140238702

LOW PH CROSSLINKING OF POLYMERS - The invention is directed to polymers that self-crosslink at acidic pH or can be crosslinked by phenolic agents in brine. Such polymers have lower viscosity and can be pumped deep into reservoirs, where they will cross link in situ, thus increasing their viscosity and/or form a gel and blocking thief zones. Methods of making and using such polymers are also provided.

08-28-2014

166401000

Injecting a gas or gas mixture

42

20100012331

Preconditioning An Oilfield Reservoir - Techniques for preconditioning an oilfield reservoir including heavy oil and/or bitumen prior to production of a petroleum product are described. A preconditioning agent can be injected into a mobile water film included in the oilfield reservoir. The preconditioning agent preconditions the reservoir prior to production of the petroleum product.

01-21-2010

20100175896

CATALYTIC OIL RECOVERY - Methods and compositions for catalytic heavy oil recovery are disclosed herein. The disclosed methods utilize novel colloidal catalysts, which may catalyze hydrogenation reactions in heavy oil deposits. These colloidal catalysts are dispersible in liquid dispersants, which are also injected into the reservoir. Embodiments of the disclosed method enable the distribution of catalytic particles throughout portions or all of the reservoir. The H

07-15-2010

20120292055

PRESSURE ASSISTED OIL RECOVERY - Estimates of global total “liquid” hydrocarbon resources are dominated by structures known as oil sands or tar sands which represent approximately two-thirds of the total recoverable resources. This is despite the Canadian Athabasca Oil Sands, which dominate these oil sand based reserves at 1.7 trillion barrels, are calculated at only 10% recovery rate. However, irrespective of whether it is the 3.6 trillion barrels recoverable from the oil sands or the 1.75 trillion barrels from conventional oil reservoirs worldwide, it is evident that significant financial return and extension of the time oil is available to the world arise from increasing the recoverable percentage of such resources. According to embodiments of the invention pressure differentials are exploited to advance production of wells, adjust the evolution of the depletion chambers formed laterally between laterally spaced wells to increase the oil recovery percentage, and provide recovery in deeper reservoirs.

11-22-2012

20120118586

DEVICE AND METHOD FOR SEQUESTERING A SUBSTANCE - There are provided a carbon dioxide storage apparatus and a carbon dioxide storage method which, through direct injection of carbon dioxide into an underground brine aquifer, can store carbon dioxide efficiently in the brine aquifer. A filter formed of, for example, grindstone is provided at a tip portion of an injection well. A pumping apparatus pumps carbon dioxide stored in a carbon dioxide tank. The pumping apparatus feeds carbon dioxide from the carbon dioxide tank into the injection well by means of a pump. In the pumping apparatus, carbon dioxide is held within a predetermined pressure range and a predetermined temperature range. Carbon dioxide is fed through the injection well, and is injected into a brine aquifer. Carbon dioxide injected into the brine aquifer assumes the form of microbubbles.

05-17-2012

20110168413

System and Method for Optimizing Production in Gas-Lift Wells - The system and method are utilized to control the flow of crude oil, natural gas, and field produced salt water to optimize production from an oil or gas well. The invention is suitable for use with a well that utilizes gas-lift as artificial lift. The equipment is designed to regulate the flow of injection gas into the production tubing to optimize production of the well.

07-14-2011

20100101808

METHOD FOR PRODUCING CRUDE OIL - The invention describes a method for injecting a fluid into a crude oil-containing layer of rock or earth by means of a suitable line, wherein the line is introduced into the layer of rock or earth and the fluid is injected for the purpose of an enhanced crude oil production from the crude oil-containing layer of rock or earth.

04-29-2010

20120168182

METHODS FOR PRODUCING OIL AND/OR GAS - A method for producing oil and/or gas comprising injecting a miscible enhanced oil recovery formulation into fractures, karsts, and/or vugs of a formation for a first time period from a first well; producing oil and/or gas from the fractures, karsts, and/or vugs from a second well for the first time period; injecting a miscible enhanced oil recovery formulation into the fractures, karsts, and/or vugs for a second time period from the second well; and producing oil and/or gas from the fractures, karsts, and/or vugs from the first well for the second time period.

07-05-2012

20120261141

METHOD AND APPARATUS FOR UTILIZING A CATALYST OCCURRING NATURALLY IN AN OIL FIELD - A system and method for cracking, hydrogenating and extracting oil from underground deposits is presented. A method includes injecting syngas into the oil deposit for processing the oil to produce upgraded oil with a reduced density and viscosity. A natural catalytic bed of the oil deposit is utilized to aid a rate of processing the oil into upgraded oil. The upgraded oil with reduced density and viscosity is extracted from the underground oil deposit by transporting the upgraded oil aboveground.

10-18-2012

20120279728

REMOVAL OF ACID GASES FROM A GAS STREAM, WITH CO2 CAPTURE AND SEQUESTRATION - A gas processing facility for processing a hydrocarbon gas stream is provided. The hydrocarbon gas stream comprises sulfurous components and carbon dioxide. The gas processing facility includes an acid gas removal facility for separating the hydrocarbon gas stream into (i) a sweetened gas stream, and (ii) an acid gas stream comprised primarily of hydrogen sulfide and carbon dioxide. The gas processing facility also includes a Claus sulfur recovery unit that generates a tail gas, and a tail gas treating unit for receiving the tail gas. In various embodiments, the gas processing facility captures CO2 from the tail gas and injects it under pressure into a subsurface reservoir. A method for processing a hydrocarbon gas stream such that additional CO2 is captured and injected into a subsurface reservoir is also provided.

11-08-2012

20120205127

SELECTIVE DISPLACEMENT OF WATER IN PRESSURE COMMUNICATION WITH A HYDROCARBON RESERVOIR - Methods and systems are provided for selectively displacing water from a hydraulically continuous water zone in a porous geological formation. The target zone to be displaced is defined by a hydrodynamically maintained pressure differential, which has been shown to be capable of confining an expanding injected gas zone. One or more gas injection wells and water production wells are located within the zone. During pressurized gas injection within the zone, the gas displaces water downward within the confined zone such that water is selectively produced from the target zone and the injected gas zone is confined within the hydraulically continuous water zone.

08-16-2012

20120205126

METHOD AND APPARATUS FOR REMOVING WATER FROM A NATURAL GAS WELL - Water is removed from a natural gas well by the use of nitrogen, which is produced by a non-cryogenic unit at the site of the well. A cylindrical casing is positioned over the well. A tubing, disposed within the casing, is aligned over the well bore. Nitrogen is selectively introduced into either the space between the tubing and the casing, or into the tubing, so as to displace water from within the tubing or the casing, respectively. The water is directed to a storage tank at the site of the well. Nitrogen is purged from the lines, and the well is ready to resume production.

08-16-2012

20110220371

System and method for fluid treatment - A method of treating a fluid, comprising treating a fluid by adding ozone to the fluid and exposing the fluid to ultraviolet radiation, and producing a wellbore servicing fluid using the treated fluid. A mobile apparatus for treating a wellbore servicing fluid, comprising a fluid flow path comprising an upstream end and a downstream end, the fluid flow path being configured to allow passage of the fluid therethrough, an ozone inlet configured to allow introduction of ozone into the fluid flow path, a source of ultraviolet radiation associated with the fluid flow path so that ultraviolet radiation generated by the source of ultraviolet radiation is introduced into the fluid flow path, and wherein the fluid flow path is configured to treat a fluid at a rate of at least about 25 to about 100 barrels per minute.

09-15-2011

20120145415

EMERGING TECHNOLOGIES FOR OPTIMIZING RECOVERY FROM HEAVY CRUDE DEPOSITS - A method for extracting hydrocarbons from an underground reservoir that includes initiating a combustion reaction inside a reservoir by injecting oxidizing gas through a set of pipes arranged inside the injection well, thereby generating a combustion front, the path of which first meets an end of a horizontal portion of a production well and, subsequently, the other end of the same; and using an assembly of pipes located inside the production well to extract from inside the reservoir the hydrocarbons entering the horizontal portion.

06-14-2012

20100096147

Methods and Apparatuses For Enhanced In Situ Hydrocarbon Production - A process for recovering hydrocarbons from an in situ formation. The process includes the steps of injecting solvent though an injection well into an underground extraction chamber having a hydrocarbon extraction interface, warming the hydrocarbons at the extraction interface to cause the hydrocarbons to flow downwardly by gravity drainage. Barrier gases naturally emerge in the chamber as a result of the extraction process and are removed from the extraction interface to improve heat transfer from said solvent to said interface. The last step is to recover liquids such as hydrocarbons and water through a production well. The invention provides a separate flow path to remove hydrocarbon gases from the chamber at a preferred location. The preferred location is near the top of the chamber where the accumulated barrier gases help to limit the heat loss and can also provide a barrier to help maintain chamber integrity and confinement.

04-22-2010

166402000

CO2 or carbonated gas

28

20120175136

METHOD FOR CAPTURING CO2 PRODUCED BY CEMENT PLANTS BY USING THE CALCIUM CYCLE - A method for capturing CO2 produced by cement plants by using the calcium cycle method comprising the integration of the process known as calcium cycle to the cement plant by using the cement plant raw materials and sub products in the calcium cycle plant and by using the calcium cycle plant raw materials, sub products and residual energy in the cement plant.

PREVENTION OR MITIGATION OF STEEL CORROSION CAUSED BY COMBUSTION GAS - Recovering oil and gas from subterranean oil and gas reservoirs using gas injection can serve an additional purpose of capturing and sequestering carbon dioxide. This can be accomplished where the feed gas for the gas injection is, at least in part, carbon dioxide from a carbon dioxide capture and sequestration process. Corrosion of steel in a gas transportation system due to the presence of carbon dioxide and water and oxygen may be prevented or at least mitigated by employing a corrosion inhibitor effective at preventing or mitigating steel corrosion in the presence of oxygen and carbon dioxide. The corrosion inhibitors may incorporate alkyl succinic acids, alkyl succinic anhydrides, and trimer acids.

11-17-2011

20100032171

Supercritical Pentane as an Extractant for Oil Shale - The present invention is directed to methods of extracting a hydrocarbon-based product from subsurface (oil) shale formations, wherein such methods rely on the use of an extraction fluid comprising pentane for facilitating the production of a mobile hydrocarbon-based product when the pentane contacts hydrocarbons in subsurface shale. The contacting process, and the subsequent process of recovering the mobile hydrocarbon-based product, is further enhanced by the methods of fracturing and/or rubblizing portions of the shale formation, so as to enhance their fluid permeability.

02-11-2010

20110272166

Separation Under Pressure of Methane from Hot Brine Useful for Geothermal Power - A gas-stripping method of separating methane from pressurized brine while under pressure with the simultaneous gas-lift pumping production of hot water capable of generating geothermal power whereby liquid carbon dioxide pumped to high pressure is injected at depth into a flow of pressurized brine located within a wellbore that is in fluid connection with a reservoir of brine solution containing methane in order to saturate the methane saturated brine with miscible liquid carbon dioxide and to gas-strip the methane from the brine as the liquid carbon dioxide boils to the gas phase in response to the thermal energy contained within the hot brine thereby effectively separating the methane from the brine water under pressure and in order to simultaneously gas-lift pressurized methane containing water from the reservoir by lowing the density of the column of water within the well. A separator pressure vessel collects and separates the liquids from the gases discharged from the well; and a second vessel separates the pressurized methane gas and high vapor pressure carbon dioxide gas by cooling and condensing the carbon dioxide gas to the liquid phase in a semi-closed cycle, being a means conserving and reusing the supply of carbon dioxide. And, geothermal power is generated using the thermal energy contained in the pressurized hot water using conventional ORC technology; and, the kinetic energy of the total flow of pressurized gases and liquids discharged from the well are harnessed by a suitable prime mover, such as a free-piston engine. The high vapor pressure of the carbon dioxide gas in the separator compresses the methane gas such that additional compression is not needed for the natural gas to flow into gas transmission lines to market; and, the high vapor pressure provides force to pressurize the brine back into the aquifer without the need for supplemental pumping energy input.

11-10-2011

20110198101

COMPOSITIONS FOR OIL RECOVERY AND METHODS OF THEIR USE - Embodiments of the present disclosure include compositions for use in enhanced oil recovery, and methods of using the compositions for recovering oil. Compositions of the present disclosure include a nonionic, non-emulsifying surfactant having a CO

08-18-2011

20120103635

DISPERSION COMPOSITIONS WITH NONIONIC SURFACTANTS FOR USE IN PETROLEUM RECOVERY - Embodiments of the present disclosure include dispersion compositions having a nonionic surfactant for use in enhanced petroleum recovery, and methods of using the dispersion compositions in petroleum recovery processes. For the various embodiments, the nonionic surfactant of the dispersion composition promotes the formation of a dispersion from carbon dioxide and water.

GAS-ASSISTED PROCESS FOR IN-SITU BITUMEN RECOVERY FROM CARBONATE RESERVOIRS - A method for producing bitumen or heavy oil from a subterranean reservoir comprising a carbonate mineral solid matrix comprising injection or co-injection of a gas other than carbon dioxide, injection or co-injection of a carbon containing gas containing a relatively low amount of carbon dioxide, injection of steam providing bicarbonate/alkalinity, or increasing the subterranean reservoir pressure, such that the dissolution and re-precipitation of carbonates is suppressed thereby.

08-12-2010

20110174507

CARBON SEQUESTRATION IN DEPLETED OIL SHALE DEPOSITS - A method and apparatus are described for sequestering carbon dioxide underground by mineralizing the carbon dioxide with coinjected fluids and minerals remaining from the extraction shale oil. In one embodiment, the oil shale of an illite-rich oil shale is heated to pyrolyze the shale underground, and carbon dioxide is provided to the remaining depleted oil shale while at an elevated temperature. Conditions are sufficient to mineralize the carbon dioxide.

07-21-2011

20110209882

Method and apparatus for sequestering CO2 gas and releasing natural gas from coal and gas shale formations - The invention relates to a method and apparatus for sequestering CO2 gas and releasing natural gas from underground coal and/or gas shale formations using CO2 gas captured from the flue gas of a coal burning power plant, and processing it to produce cold liquid pressurized CO2, and injecting the cold liquid CO2 under pressure to create fractures within the formation and causing the CO2 to be adsorbed into the coal or gas shale and CH4 to be desorbed, released and recovered. No high volume of water, no toxic additives to the water and no sand proppants are used for hydro-fracture of the gas shale or coal bed.

09-01-2011

20100314136

SYSTEMS AND METHODS FOR GENERATING IN-SITU CARBON DIOXIDE DRIVER GAS FOR USE IN ENHANCED OIL RECOVERY - The present invention is an in-situ apparatus for generating carbon dioxide gas at an oil site for use in enhanced oil recovery (EOR). The apparatus includes a steam generator adapted to boil and superheat water to generate a source of superheated steam, as well as a source of essentially pure oxygen. The apparatus also includes a steam reformer adapted to react a carbonaceous material with the superheated steam and the pure oxygen, in an absence of air, to generate a driver gas comprising primarily carbon dioxide gas and hydrogen gas. A separator is adapted to separate at least a portion of the carbon dioxide gas from the rest of the driver gas to generate a carbon dioxide-rich driver gas and a hydrogen-rich fuel gas. A compressor is used for compressing the carbon dioxide-rich driver gas for use in enhanced oil recovery, and the compressed carbon dioxide-rich driver gas, with substantially no oxygen, is injected to a predetermined depth in order to enhance oil recovery at the oil site. Unlike traditional CO

12-16-2010

20140284066

SYSTEMS AND METHODS FOR GENERATING IN-SITU CARBON DIOXIDE DRIVER GAS FOR USE IN ENHANCED OIL RECOVERY - The present invention is an in-situ apparatus for generating carbon dioxide gas at an oil site for use in enhanced oil recovery (EOR). The apparatus includes a steam generator adapted to boil and superheat water to generate a source of superheated steam, as well as a source of essentially pure oxygen. The apparatus also includes a steam reformer adapted to react a carbonaceous material with the superheated steam and the pure oxygen, in an absence of air, to generate a driver gas comprising primarily carbon dioxide gas and hydrogen gas. A separator is adapted to separate at least a portion of the carbon dioxide gas from the rest of the driver gas to generate a carbon dioxide-rich driver gas and a hydrogen-rich fuel gas. A compressor is used for compressing the carbon dioxide-rich driver gas for use in enhanced oil recovery, and the compressed carbon dioxide-rich driver gas, with substantially no oxygen, is injected to a predetermined depth in order to enhance oil recovery at the oil site. Unlike traditional CO

09-25-2014

20120055685

METHODS FOR INCREASING OIL PRODUCTION - A method of recovering petroleum from dormant oil wells or increasing the production of oil wells is disclosed. An alkali or alkali earth carbonate is introduced into a water layer associated with a subterranean petroleum reservoir and/or an explosive composition is introduced into an oil layer associated with a subterranean petroleum reservoir. CO

03-08-2012

20100270038

Kerogen Extraction from Subterranean Oil Shale Resources - The present invention is directed to methods for extracting a kerogen-based product from subsurface (oil) shale formations, wherein such methods rely on fracturing and/or rubblizing portions of said formations so as to enhance their fluid permeability, and wherein such methods further rely on chemically modifying the shale-bound kerogen so as to render it mobile. The present invention is also directed at systems for implementing at least some of the foregoing methods. Additionally, the present invention is also directed to methods of fracturing and/or rubblizing subsurface shale formations and to methods of chemically modifying kerogen in situ so as to render it mobile.

10-28-2010

20120318533

CO2 Storage In Organic-Rich Rock Formation With Hydrocarbon Recovery - A method for producing hydrocarbons from and/or storing C02 in an organic-rich rock formation. One embodiment of the method includes the steps of injecting the C02 into an injection well in the organic-rich rock formation and producing the hydrocarbons from a production well when a drainage volume of the production well has an average reservoir pressure equal to or less than a predetermined pressure. The hydrocarbons substantially include natural gas and the injection well is in fluid communication with the production well. The embodiment also includes capping the production well and feeding the C02 into the injection well when the produced hydrocarbons include a C02 mole fraction greater than or equal to a predetermined mole fraction.

ENHANCED OIL RECOVERY METHODS FOR PRODUCING OIL FROM HEAVY OIL FIELDS - The present disclosure relates to enhanced oil recovery methods for highly viscous oil reservoirs containing large amounts of mobile water. One method includes injecting a carbon disulfide formulation or fluid into the formation via a first well and displacing the mobile water from the formation with the carbon disulfide fluid. The highly viscous oil is then solubilized using the carbon disulfide fluid, thereby generating a mixture of mobilized oil. The mixture of mobilized oil is then forced towards a second well and subsequently produced from the second well.

01-16-2014

20110114340

SYSTEM AND METHOD FOR TRANSPORTING FLUIDS IN A PIPELINE - A method of transporting carbon dioxide and crude oil in a pipeline is disclosed. The method includes providing supercritical carbon dioxide and heavy or extra heavy crude oil produced from a subterranean reservoir. The crude oil is mixed with the supercritical carbon dioxide to form a mixture having a viscosity less than the viscosity of the crude oil prior to mixing. The mixture is transported in a pipeline from a first location to a second location. The pipeline is maintained at sufficient pressures and temperatures such that any unsaturated carbon dioxide remains in a supercritical state while the mixture is transported through the pipeline.

05-19-2011

20140020913

Recovery of oil sands bitumen - A method for improving the SWAG process for extracting the hydrocarbon, bitumen, from tar sands by injecting carbon dioxide into the reservoir. Said carbon dioxide will dissolve in the bitumen producing a solution having increased producibility greatly above that of the native bitumen. Recovery of the bitumen CO2 solution can be further enhanced by heat. Heat can be supplied by various means including elevating the temperature of the carbon dioxide prior to injection, injecting a mixture of carbon dioxide and steam or generating heat in-situ by including oxygen, preferably purified, with any of the above-mentioned injectants. This invention is ideally conducted through, but not limited to, the use of horizontal wells completed near the top and base of the reservoir.

Gas Fracture Injection to Overcome Retrograde Condensation in Gas Wells - Disclosed is a well configuration and method of forming the configuration and producing hydrocarbons from the configuration. In one embodiment, multiple fractures are formed from a wellbore in a subterranean hydrocarbon gas formation. One fracture is filled with material to create a flow barrier that modifies the flow pattern of at least one fluid within the subterranean hydrocarbon formation. Also disclosed is the process of injecting a Dew Point altering gas into the formation on one side of the barrier and producing a mixture of formation gas and injected gas from the fractures on the other side of the barrier.

GAS ACTIVITY ANALYSIS IN THE GROUND - A method of introducing a propellant gas into the ground is described, wherein a trace gas that can be analysed above the ground or the earth's surface is added to said propellant gas. According to the invention hydrogen is used as the trace gas, whereby the proportion of the trace gas hydrogen in the propellant gas/trace gas mixture is a maximum of 10% by vol., preferably a maximum of 5% by vol.

07-08-2010

20080283254

METHOD FOR INCREASED OIL RECOVERY FROM AN OIL FIELD - A method for increasing oil recovery from an oil reservoir in which method surplus gas streams from a plant for synthesis of higher hydrocarbons from natural gas is injected into the reservoir, is described. The surplus streams from the plant is the tailgas from the synthesis and optionally nitrogen from an air separation unit which delivers oxygen or oxygen enriched air to the plant for synthesis of higher hydrocarbons.

11-20-2008

20120125644

ENHANCED OIL RECOVERY IN LOW PERMEABILITY RESERVOIRS - A method for enhancing hydrocarbon recovery in low permeability reservoirs comprises first providing a subterranean reservoir comprising one or more hydrocarbons and water therewithin and a wellbore in fluid communication with the subterranean reservoir. Next, a substantially anhydrous composition is injected into the reservoir through the wellbore. The substantially anhydrous composition comprises carbon dioxide and one or more surfactants. The composition is suitable to form a foam upon contact with the water within the reservoir. The method often results in reduced wellbore corrosion and hydrate formation, reduced reservoir fingering, and enhanced carbon dioxide sweep efficiency over conventional methods.

05-24-2012

20120261142

METHOD OF CREATING CARBONIC ACID WITHIN AN OIL MATRIX - A system and method for cracking, hydrogenating and extracting oil from underground deposits is presented. A system includes injecting syngas into a oil deposit to crack and hydrogenate the oil to produce upgraded oil with a reduced density and viscosity. An acid is created to increase the geological matrix within the oil deposit to allow an increase volume of upgraded oil to flow through the geological matrix. For example, condensing the syngas in the oil deposit produces condensed syngas and this can be combined with combining carbon dioxide with the condensed syngas to produce carbonic acid. The upgraded oil with reduced density and viscosity is extracted from the underground deposit to transport the upgraded oil aboveground.

10-18-2012

20100163255

PROCESS FOR PREVENTING OR REMEDIATING TRITHIAZINE DEPOSITION IN HIGH H2S WELLS - A method for treating a wellbore in a hydrogen sulfide-containing formation that includes injecting a first slug in the wellbore, the first slug comprising: at least one of primary amine and ammonia; and a base fluid; injecting a second slug in the wellbore, the second slug comprising: a triazine scavenger; and a base fluid; and allowing the triazine scavenger to react with the hydrogen sulfide is disclosed.